Cement-block mold



Nov. 1, 1927. I 1,647,436

C. A. COVEY CEMENT BLOCK MOLD f Fiied April 4, 1927 2 Sheets-Sheet 1 CfiaTZesA. 650. 2%

Nov. 1,1927. 1,647,436

C. A. COVEY CEMENT BLOCK MOLD Filed April 4, 1927 2 Sheets-Sheet 2 ZYZaTZa'QA ("00634 q/vdmma I Patented Nov. 1, 1927.

iterate warren starts ear-ear orriea- CHARLES A. COV EY, OF SAN ANTONIO, TEXAS.

CEMENT-BLOCK MOLD.

Application filed April 4, 1927. Serial No. 180,956.,

This principal object of the present in-' tion'laterally offset from its major portion,

and a further object or" the invention is to provide for effective stiffening of this wall and to prevent any springing of its laterally offsetend portion, with respect to its major portion.

A still further object is to provide the mold with unique means for shaping the upper surface of a blockformed therein, so that said block will interlock with an overlying block.

With the foregoing and minor objects in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawings.

Fig. 1 is a top plan view of a mold constructed in accordance with my invention, showing the same conditioned for casting a substantially S-shaped block.

Fig. 2 is a vertical longitudinal section as indicated by line 22 of Fig. 1.

, Fig. 3 is a vertical transverse section on line 33 of 1. Y

Fig. 4 is a disassembled perspective view of the mold parts shown in the preceding figures.

Fig. 5 is a perspective view of the block formed by these mold parts.

Fig. 6 is a top plan view showing the mold converted for casting a dilierent kind of block.

Fig. 7 is a perspective view illustrating the form of block molded in the mold, when conditioned as in Fig. 6. I

' Fig. 8 is a perspective view of the partition'and its spacing plates, which parts are shown in top plan view in Fig. 6.

- M Fig. 9 is a perspective view'ofacore which may: be employed with the parts shown in Fig. 6, when the partition is removed,'thus producing the third. type ofblock.

Fig. 10 is a perspective view of a portion of a wall formed of blocks molded with the improved mold.

, In the drawings above briefly described, 11 designates a suitable base, and 12, 12 and 12", denote wall members for use upon said base, either the member 12 or the me'Inber 12 being co-operable with the member 12 and the base 11, in forming a mold. In

Figs. 1 to 4, the moldembodies the two wall members 12 and 12 and a substantially S- shaped block B (Figs. 5 and 10)" will be then formed In Fig. 6, the wall member 12 cooperates with the wall member 12 and a partition 13 extends transversely between them, this relation of parts being employed to form the block B shown in Figs. 7

and 10. lVhenthe partition 18 is removed and the core 14 of Fig. 9, engaged with the positioning means 15 on the base plate '11, a corner block B (Fig. 10) willbe formed.

Cleats 16 are provided on the base 11, to engage the outer sides of the wall members 1212 1) or 1212 (Fig. 6), and any desired means such as the hooks 17, pins 18 and lugs 19, may be employed on the co-operable wall members, to detachably secure them together. Y

When the wall member 12 is used wit the-member 12, a portion of said member 12 does not contact with portions of the cleats 16, engaged by the wall member 12 as will be clear by a comparison ofFigs; 1 and 6. However, a port-ion of the core-positioning means 15, then abuts a partof the mold of co-acting with the cleats 16 in efiectively holding the member 12 in operative position. v

Both members 12 12 'are of substantially section 12 as shown in Fig. 1, so-that said means 15 performsthe additional function S-shape in top plan, and as they both have a number of features in common, a description of the member 12 will suffice for both,

with slight additions. This member 12 embodies a. main vertical portion 20, an end portion 21 inwardly oiiset trom said main portion and disposed in a plane parallel therewith, an end-forming flange 22 pro;

jecting laterally from the outer end of the portion 21, in a direction away from the plane of the majorp'ortion 12, and a connecting portion 23 which connects the inner end of the major portion 20 with the inner. end of the'end portlon 21. This connecting portion is preferably shaped as shown most clearly in Figs. 4 and 6. It extends laterally inward at 24L from the major portion 20, at right angles to the latter, then extends longitudinally at right angles in a direction away from the major portion 20, as indicated at 25, then extends again laterally at right angles as indicated at 26, in a direction toward the end portion 21, then extends obliquely inward at 27, and finally curves at 28 to the end portion 21. Shaping of the connecting portion 23 in this manner, causes it to shape end portions of the blocks B, B and B in the manner denoted at B and such shoulders are thus provided that the blocks may be easily laid in orderly fashion with a break joint system having obvious advantages, as well as producing a wall 'wh'ich will be well ventilated by openings therethrough.

It is desired to form the blocks with projections B and sockets B these formations co-operating to lock the blocks in proper assembled relation. In order to produce these formations on the bottoms of the blocks, the base 11 is provided with a socket 29. and a projection 30, and to provide these formations at the upper sides of the blocks, a block-forming plate 31 is provided, having a projection 32 and a socket 33 disposed side by side and of substantially the same size. This plate is to be forced downwardly upon a freshly cast block while the cement is still fluid, the result being that some of this cement will be displaced by the projection 32 and this displaced cement will be received in the socket 33. The plate 31 is held in lowered position until the cement sets Sufficiently tgcause the block to retain its shape, whereupon all parts of the mold may be disassembled and taken from the block.

Preferably, one end of the plate 31 is provided with a pair of projecting fingers 3a of hook form, said fingers being receivable in slots 35 in an outwardly projecting flange of a reinforcing bar 36' which is secured to the upper edge portion of the wall member 12 a similar bar 36 being secured to the wall member 12, while the member 12 is provided with such a bar, as indicated at 36 in Fig. 6, the slots of the last named bar, being indicated at 35. The end of the plate 31 opposite the fingers 34, is provided with a suitable fastener 3'? which is engageable 'with an outwardly projecting flange of the bar 36, to hold the plate 31 lowered, as will be clear fronrFigs. 1 and 3.

The bars 36 and 36? of the wall members 12 and 12, extend beyond the major portions of these wall members and project obliquely inward to the offset end portions 21-21 of said wall members, being suitably secured .to the latter and providing effective braces 38-38. Thus, the major portions of the wall members 12 and 12 are effectively stiflened, and their end portions 21 and 21 are rigidly braced so that they cannot move out of operative relation with said major portion. Additional and lower braces 39- 39 may be provided under the braces 38 38, if desired.

VJ hen a block B is formed, its upper and lower sides will be provided at their intermediate portions, with the formations B and B provided by the parts 293O and 32-33. Moreover, these same formations will be provided when either the partition 13 is used to form the block B, or the post 1 1 is used in the construction of the block B Preferably, the partition 13 is formed of a metal plate having end portions bent laterally in the same direction to provide spacing plates 10 which lie against the inner sides of the wall members 12 and12 and abut the end wall 12 of said member 12 (see Fig. 6).

The core 14, used in forming the blocks B may be of any desired cross-sectional shape, and the positioning means 15 for this core, is constituted by a group of cleats 41, in the present disclosure, one of said cleats directly abutting an outer side portion of the member 12, when the latter is used as seen in Fig. 1.

It will be seen from the foregoing that a very simple and inexpensive, yet an efficient and desirable construction has been provided, readily permitting the formation of any of the blocks B, B and B By providing the molding equipment herein disclosed, the necessity of having different complete molds for the formation of the different blocks, is unnecessary and hence a great saving is effected.

As excellent results are obtainable from the details disclosed, we prefer to follow them. However, within the scope of the invention as claimed, variations may be made. Moreover, while the mold is shown constructed for forming blocks having straight inner and outer sides, it will be understood that for the construcion of silo or analogous blocks, molds may be formed having the desired curvature.

I claim v 1. In a block mold, a side plate having an end portion inwardly offset from its major portion, and av plate-stifiening bar socured longitudinally to the outer side of said major portion; said bar having an end portion which projects beyond the inner end of said major portion of the plate, extends obliquely to the outer end of said inwardly offset portion of said plate and is secured thereto. i

2. In a block mold, a side plate compris- 3 ing a flat vertical major portion, a flat vertical end portion inwardly offset from said major portion and disposed in a plane parallel therewith, a vertical end flange projecting laterally from the outer end of'said end portion in direction away from. the

plane of said major portion, and. a connecting portion joining the inner ends of said major and end portions.

3. In a block mold, a side plate comprising a fiat vertical major portion, a flat vertical end portion inwardly ofiset from said major portion and disposed in a lane parallel therewith, a vertical end ange projecting laterally from the outer end of said end portion in a direction away from the.

plane of said major portion, and a connecting portion joining the inner ends of said major and end portions, said connecting portion extending transversely at right angles from said major portion toward said end portion, then longitudinally at right angles in a direction away from said major portion, than again transversely at right angles away from the plane of said major portion, then obliquely inward toward said in ner end of said end portion and finally curving to the same.

4. Block molding equipment comprising a base, a wall member resting thereon and of substantially S-shape in plan View; a second substantially S-shaped wall member and a right angular Wall member either of which is co-operable with the first named S-shaped member in forming a complete wall, cleats on said base for engagement with the first named S-shapcd wall member and either of the other wall members co-acting therewith, and upwardly projecting means on the base within the confines of said cleats, said means having a portion to engage a part of the second S-shaped wall member to assist in holding it in place, said means having the additional function of holding a core. in place when the right angular Wall member isused. 5. A structure as specified in claim 4; said -means consisting of a group of cleats, said portion of said means consisting of one of lts cleats.

6. In combination with a block mold, a

mold and downwardly swingable over the latter, and means on said member for shaping the block for interlocking engagement with another block. I

8. A block-mold having an outstanding flange at its upper edge formed with an opening, and a block-shaping plate having a lug receivable in said opening to detachably and pivotally connect the plate with the mold. V

9. In a block mold, a member adapted for downward movement onto a green cement block while the cement is'fluid, said member having a projection andoa socket disposed side by side and of substantially the same size, whereby the cement displaced by the projection will be received in the socket, simultaneously providing the block with a projection and a socket to interlock with complementary formations on another block.

In testimony whereof I have hereunto affixed my signature. 7

CHARLES A. GOVEY. 

